What's the difference between special effects and visual effects?.

What's the Difference Between VFX and SFX? The term “visual effects” is not interchangeable with the term “special effects” (SFX). Unlike VFX, SFX are achieved in real-time during filming; examples include pyrotechnics, fake rain, animatronics, and prosthetic makeup. All VFX are added after shooting in post-production.

Explanation:

all of them except "c"

answer; i believe the correct answer is (proximity);